diff --git a/clusters/cl01tl/monitoring/kube-prometheus-stack/values.yaml b/clusters/cl01tl/monitoring/kube-prometheus-stack/values.yaml
index 1962e5b56..c01d39501 100644
--- a/clusters/cl01tl/monitoring/kube-prometheus-stack/values.yaml
+++ b/clusters/cl01tl/monitoring/kube-prometheus-stack/values.yaml
@@ -178,6 +178,8 @@ kube-prometheus-stack:
               requests:
                 storage: 200Gi
 ntfy-alertmanager:
+  global:
+    fullnameOverride: ntfy-alertmanager
   controllers:
     main:
       type: deployment